Shuttle-raceway support for sewing-machines.



. ATENTED DEC. 20, 1904 w. A. MACK. SHUTTLE RAGEWAY SUPPORT FOR SEWING MACHINES.

APPLICATION FILED SI' IFTT 19, 1392. 7 N0 MODEL.

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I g A/ Patented December 20,1904.

PATENT "OFFICE, a I

WILLIAM A. MACK, OF: NORWALK,

SEWING. MACHINE COMPANY, OF

OF OHIO.

OHIO, ASSIGNOR TO THE STANDARD CLEVELAND, OHIO, A CORPORATION SHUTTLE-RACEWAY SUPPORT FOR SEWING-MACHINES SPECIFIGATION forming part of Letters Patent No. 778,202, dated December 20, 1904. 1 Original application filed April 25 1885, Serial No. 163,395. Divided and this application filed September 19, 1892. Serial No. 446,268.

To a, whom it'may concern:

Be it known that I, WILLIAM A. MACK, a citi-.

zen of the United States, and a resident of Norwalk,in the county of Huron and State of Ohio,

have invented new and useful Improvements in Sewing-Machines, of whichthe following is a specification.

The invention forming the subject-matter of the present application, which is a division of a prior application on which has been issued Letters Patent No. 519,539, dated May 8, 1894, relates to improvements in se wing-machines, and particularly to that class of sewing-machines employing a rotary or oscillatingshuttle supported to operate in a raceway. In this class of machines the shuttle-supporting raceway is usually located in some part having a fixed relation to the bed-plate and to the path of movement of the needle. As the shuttle supported in such raceway is therefore nonadjustable with respect to the path of movement of the needle, it is the usual practice in adjusting the parts for thepurpose of having the needle move in proper relation to the shuttle during the stitch-forming operation to either shift the overhanging arm, with the needle-bar and other supported parts on the bedplate, or else bend the needle -or needle-bar. As both of these methods are obviously undesirable, however, it has been the main object of my present invention to provide a sewingmachine having an improved means for permitting of any necessary adjustment of the parts in securing the proper cooperation of theneedle and the shuttle in the stitch-forming operation.

In carrying the invention into effect I locate the shuttle-raceway in a suitable frame and adjustably support said frame within a seat formed to receive the same at the under side of the bed-plate of the machine, the arrangement of the partsbeing such that the raceway-frame may be adjusted within its said seat in a direction to move the supported shuttle either toward or from the path of movement of the needle, and thereby permit the desired positioning of such parts relatively to each other.

Referring to the accompanying drawings, forming part'of this specification, Figure l is a front end elevation, with the bed-plate in section, of apart of a Standard rotaryshuttle sewing-machine embodying my invention. Fig. 2 is a front elevationof the shuttle raceway frame with its contained shuttle'detached from the machine, and Fig. 3 is a sectional elevation on line 3 3 of-FigAl. The sewing-machine shown in the drawings with my invention applied thereto comprises the bed-plate a, the needle-plate a, the vertically-raciprocatingneedle(tithe rotaryshuttle b, and the bobbin-case cl, the said needle and the shuttle being adapted to cooperate in the formation of astitch in the usual manner. In the present case the circular raceway in which the 5 shuttle is supported and operates is located in a frame,(d esignated generally by f,)which comprises abody-ringf and adetachablecap-ring f ,the saidbody-ring being provided on its inner peripheral wall and at the front edge thereof with the circular raceway f in which the shuttle is supported atits peripheral or racebearing edge, and the cap-ring f being de-' tachably secured to the said body-ring by suitable fastening means, such as the screws 3, with its inner edge overlapping the adjacent edge of the shuttle and serving to removably retain the latter in its said raceway. The racewayrfrarne f is adapted to be supported at the under side of the bed-plate a in such position as to assure the proper cooperation of the contained shuttle 6 with the needie a during the stitch-forming operation, and the means for so supporting the said raceway-frame, as herein shown, comprises a hanger h on the under side of the bed-plate having an opening extending therethrough in a direction at substantially right angles to the path of movement of the needle, which forms a seat within which the frame f is removably and adjustably secured by suitable fastening means, such as the screws 7e. Withv the raceway-frame f thus supported it may be readily shifted back and forth within its seat to properly adjust the position of the contained shuttle relatively to the path of movement of the needle and also by reason of its circular form he turned within its seat to properly adjust the position of its needle-opening f relatively to the path of movement of the needle.

A further and important feature of the shuttle-raceway being located in a relatively small frame that is detachable from the machine is the fact that it enables such frame to be constructed and provided with the shuttle and other associated parts Without the necessity of handling the heavy and cumbersome bedplate casting for such purpose as would be required if the shuttle-raceway were formed in said bed-plate itself.

What I claim is- 1. In a sewing-machine of the class described, the combination of a bed-plate provided with a seat below its upper surface, a racewayframe adjustably supported within said seat and being provided with a circular raceway, and means for securing said frame in a stationary adjusted position, for the purpose set forth.

2. In a sewing-machine of the class described, the combination of a bed-plate provided with a seat below its upper surface, a circular raceway-frame adjustably supported within said seat and being provided with a circular raceway, and means for securing said frame in a stationary adjusted position, for the purpose set forth.

3. In a sewing-machine of the class described, the combination of a bed-plate pro vided with a stationary support or hanger on its under side having a seat or opening extending therethrough in a direction at right angles to the path of movement of the needle, a shuttle-raceway frame ad justabl y supported within said hanger and being provided with a circular raceway, and means for securing said frame in a stationary adjusted position relative to the path of movement of the neodle, for the purpose set forth.

4:. In a sewing-machine of the class described, the combination of a bed-plate provided with a hanger on its under side having a circular seat therein, a circular shuttle-raceway frame removabl y supported within said seat and being provided with a circular raceway, and means for securing the frame in a stationary position in its said seat.

\VlLL lAM A. MACK.

Attest:

Cnas. F. DANE, A. L. IlAYns. 

